sadasant

Recursive fold takeWhile (as in haskell). Lazy evaluated!

• Iterates depth-first every element of a nested data structure given as obj.
• Runs only while the iterator fn returns true.
• The fn iterator receives:
  • An accumulator, that by default is an array, but that can be defined as anything else in the third parameter given to foldWhile.
  • The next value iterated.

jdjkelly

Making Accessible Ember Components

Making the web accessible is important. We have ethical and, in some cases, legal obligations to ensuring access to all of users.

Luckily for us, it's easy to make an accessible Ember Component.

What are components?

To understand the accessibility story around Ember Components, we have to start by talking about Web Components. Ember Components are designed to be interoperable with the final Web Components API.

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

practicingruby

require 'socket'

module EventEmitter
  def _callbacks
    @_callbacks ||= Hash.new { |h, k| h[k] = [] }
  end

  def on(type, &blk)
    _callbacks[type] << blk
    self

mshafrir

{
    "AL": "Alabama",
    "AK": "Alaska",
    "AS": "American Samoa",
    "AZ": "Arizona",
    "AR": "Arkansas",
    "CA": "California",
    "CO": "Colorado",
    "CT": "Connecticut",
    "DE": "Delaware",